wcsmbs/wchar.h

   1 /* Copyright (C) 1995-2004,2005,2006 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, write to the Free
  16    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  17    02111-1307 USA.  */
  18
  19 /*
  20  *      ISO C99 Standard: 7.24
  21  *      Extended multibyte and wide character utilities <wchar.h>
  22  */
  23
  24 #ifndef _WCHAR_H
  25
  26 #ifndef __need_mbstate_t
  27 # define _WCHAR_H 1
  28 # include <features.h>
  29 #endif
  30
  31 #ifdef _WCHAR_H
  32 /* Get FILE definition.  */
  33 # define __need___FILE
  34 # ifdef __USE_UNIX98
  35 #  define __need_FILE
  36 # endif
  37 # include <stdio.h>
  38 /* Get va_list definition.  */
  39 # define __need___va_list
  40 # include <stdarg.h>
  41
  42 /* Get size_t, wchar_t, wint_t and NULL from <stddef.h>.  */
  43 # define __need_size_t
  44 # define __need_wchar_t
  45 # define __need_NULL
  46 #endif
  47 #define __need_wint_t
  48 #include <stddef.h>
  49
  50 #include <bits/wchar.h>
  51
  52 /* We try to get wint_t from <stddef.h>, but not all GCC versions define it
  53    there.  So define it ourselves if it remains undefined.  */
  54 #ifndef _WINT_T
  55 /* Integral type unchanged by default argument promotions that can
  56    hold any value corresponding to members of the extended character
  57    set, as well as at least one value that does not correspond to any
  58    member of the extended character set.  */
  59 # define _WINT_T
  60 typedef unsigned int wint_t;
  61 #else
  62 /* Work around problems with the <stddef.h> file which doesn't put
  63    wint_t in the std namespace.  */
  64 # if defined __cplusplus && defined _GLIBCPP_USE_NAMESPACES \
  65      && defined __WINT_TYPE__
  66 __BEGIN_NAMESPACE_STD
  67 typedef __WINT_TYPE__ wint_t;
  68 __END_NAMESPACE_STD
  69 # endif
  70 #endif
  71
  72
  73 #ifndef __mbstate_t_defined
  74 # define __mbstate_t_defined    1
  75 /* Conversion state information.  */
  76 typedef struct
  77 {
  78   int __count;
  79   union
  80   {
  81     wint_t __wch;
  82     char __wchb[4];
  83   } __value;            /* Value so far.  */
  84 } __mbstate_t;
  85 #endif
  86 #undef __need_mbstate_t
  87
  88
  89 /* The rest of the file is only used if used if __need_mbstate_t is not
  90    defined.  */
  91 #ifdef _WCHAR_H
  92
  93 __BEGIN_NAMESPACE_C99
  94 /* Public type.  */
  95 typedef __mbstate_t mbstate_t;
  96 __END_NAMESPACE_C99
  97 #ifdef __USE_GNU
  98 __USING_NAMESPACE_C99(mbstate_t)
  99 #endif
 100
 101 #ifndef WCHAR_MIN
 102 /* These constants might also be defined in <inttypes.h>.  */
 103 # define WCHAR_MIN __WCHAR_MIN
 104 # define WCHAR_MAX __WCHAR_MAX
 105 #endif
 106
 107 #ifndef WEOF
 108 # define WEOF (0xffffffffu)
 109 #endif
 110
 111 /* For XPG4 compliance we have to define the stuff from <wctype.h> here
 112    as well.  */
 113 #if defined __USE_XOPEN && !defined __USE_UNIX98
 114 # include <wctype.h>
 115 #endif
 116
 117
 118 __BEGIN_DECLS
 119
 120 __BEGIN_NAMESPACE_STD
 121 /* This incomplete type is defined in <time.h> but needed here because
 122    of `wcsftime'.  */
 123 struct tm;
 124 /* XXX We have to clean this up at some point.  Since tm is in the std
 125    namespace but wcsftime is in __c99 the type wouldn't be found
 126    without inserting it in the global namespace.  */
 127 __USING_NAMESPACE_STD(tm)
 128 __END_NAMESPACE_STD
 129
 130
 131 __BEGIN_NAMESPACE_C99
 132 /* Copy SRC to DEST.  */
 133 extern wchar_t *wcscpy (wchar_t *__restrict __dest,
 134                         __const wchar_t *__restrict __src) __THROW;
 135 /* Copy no more than N wide-characters of SRC to DEST.  */
 136 extern wchar_t *wcsncpy (wchar_t *__restrict __dest,
 137                          __const wchar_t *__restrict __src, size_t __n)
 138      __THROW;
 139
 140 /* Append SRC onto DEST.  */
 141 extern wchar_t *wcscat (wchar_t *__restrict __dest,
 142                         __const wchar_t *__restrict __src) __THROW;
 143 /* Append no more than N wide-characters of SRC onto DEST.  */
 144 extern wchar_t *wcsncat (wchar_t *__restrict __dest,
 145                          __const wchar_t *__restrict __src, size_t __n)
 146      __THROW;
 147
 148 /* Compare S1 and S2.  */
 149 extern int wcscmp (__const wchar_t *__s1, __const wchar_t *__s2)
 150      __THROW __attribute_pure__;
 151 /* Compare N wide-characters of S1 and S2.  */
 152 extern int wcsncmp (__const wchar_t *__s1, __const wchar_t *__s2, size_t __n)
 153      __THROW __attribute_pure__;
 154 __END_NAMESPACE_C99
 155
 156 #ifdef __USE_GNU
 157 /* Compare S1 and S2, ignoring case.  */
 158 extern int wcscasecmp (__const wchar_t *__s1, __const wchar_t *__s2) __THROW;
 159
 160 /* Compare no more than N chars of S1 and S2, ignoring case.  */
 161 extern int wcsncasecmp (__const wchar_t *__s1, __const wchar_t *__s2,
 162                         size_t __n) __THROW;
 163
 164 /* Similar to the two functions above but take the information from
 165    the provided locale and not the global locale.  */
 166 # include <xlocale.h>
 167
 168 extern int wcscasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
 169                          __locale_t __loc) __THROW;
 170
 171 extern int wcsncasecmp_l (__const wchar_t *__s1, __const wchar_t *__s2,
 172                           size_t __n, __locale_t __loc) __THROW;
 173 #endif
 174
 175 __BEGIN_NAMESPACE_C99
 176 /* Compare S1 and S2, both interpreted as appropriate to the
 177    LC_COLLATE category of the current locale.  */
 178 extern int wcscoll (__const wchar_t *__s1, __const wchar_t *__s2) __THROW;
 179 /* Transform S2 into array pointed to by S1 such that if wcscmp is
 180    applied to two transformed strings the result is the as applying
 181    `wcscoll' to the original strings.  */
 182 extern size_t wcsxfrm (wchar_t *__restrict __s1,
 183                        __const wchar_t *__restrict __s2, size_t __n) __THROW;
 184 __END_NAMESPACE_C99
 185
 186 #ifdef __USE_GNU
 187 /* Similar to the two functions above but take the information from
 188    the provided locale and not the global locale.  */
 189
 190 /* Compare S1 and S2, both interpreted as appropriate to the
 191    LC_COLLATE category of the given locale.  */
 192 extern int wcscoll_l (__const wchar_t *__s1, __const wchar_t *__s2,
 193                       __locale_t __loc) __THROW;
 194
 195 /* Transform S2 into array pointed to by S1 such that if wcscmp is
 196    applied to two transformed strings the result is the as applying
 197    `wcscoll' to the original strings.  */
 198 extern size_t wcsxfrm_l (wchar_t *__s1, __const wchar_t *__s2,
 199                          size_t __n, __locale_t __loc) __THROW;
 200
 201 /* Duplicate S, returning an identical malloc'd string.  */
 202 extern wchar_t *wcsdup (__const wchar_t *__s) __THROW __attribute_malloc__;
 203 #endif
 204
 205 __BEGIN_NAMESPACE_C99
 206 /* Find the first occurrence of WC in WCS.  */
 207 extern wchar_t *wcschr (__const wchar_t *__wcs, wchar_t __wc)
 208      __THROW __attribute_pure__;
 209 /* Find the last occurrence of WC in WCS.  */
 210 extern wchar_t *wcsrchr (__const wchar_t *__wcs, wchar_t __wc)
 211      __THROW __attribute_pure__;
 212 __END_NAMESPACE_C99
 213
 214 #ifdef __USE_GNU
 215 /* This function is similar to `wcschr'.  But it returns a pointer to
 216    the closing NUL wide character in case C is not found in S.  */
 217 extern wchar_t *wcschrnul (__const wchar_t *__s, wchar_t __wc)
 218      __THROW __attribute_pure__;
 219 #endif
 220
 221 __BEGIN_NAMESPACE_C99
 222 /* Return the length of the initial segmet of WCS which
 223    consists entirely of wide characters not in REJECT.  */
 224 extern size_t wcscspn (__const wchar_t *__wcs, __const wchar_t *__reject)
 225      __THROW __attribute_pure__;
 226 /* Return the length of the initial segmet of WCS which
 227    consists entirely of wide characters in  ACCEPT.  */
 228 extern size_t wcsspn (__const wchar_t *__wcs, __const wchar_t *__accept)
 229      __THROW __attribute_pure__;
 230 /* Find the first occurrence in WCS of any character in ACCEPT.  */
 231 extern wchar_t *wcspbrk (__const wchar_t *__wcs, __const wchar_t *__accept)
 232      __THROW __attribute_pure__;
 233 /* Find the first occurrence of NEEDLE in HAYSTACK.  */
 234 extern wchar_t *wcsstr (__const wchar_t *__haystack, __const wchar_t *__needle)
 235      __THROW __attribute_pure__;
 236
 237 /* Divide WCS into tokens separated by characters in DELIM.  */
 238 extern wchar_t *wcstok (wchar_t *__restrict __s,
 239                         __const wchar_t *__restrict __delim,
 240                         wchar_t **__restrict __ptr) __THROW;
 241
 242 /* Return the number of wide characters in S.  */
 243 extern size_t wcslen (__const wchar_t *__s) __THROW __attribute_pure__;
 244 __END_NAMESPACE_C99
 245
 246 #ifdef __USE_XOPEN
 247 /* Another name for `wcsstr' from XPG4.  */
 248 extern wchar_t *wcswcs (__const wchar_t *__haystack, __const wchar_t *__needle)
 249      __THROW __attribute_pure__;
 250 #endif
 251
 252 #ifdef __USE_GNU
 253 /* Return the number of wide characters in S, but at most MAXLEN.  */
 254 extern size_t wcsnlen (__const wchar_t *__s, size_t __maxlen)
 255      __THROW __attribute_pure__;
 256 #endif
 257
 258
 259 __BEGIN_NAMESPACE_C99
 260 /* Search N wide characters of S for C.  */
 261 extern wchar_t *wmemchr (__const wchar_t *__s, wchar_t __c, size_t __n)
 262      __THROW __attribute_pure__;
 263
 264 /* Compare N wide characters of S1 and S2.  */
 265 extern int wmemcmp (__const wchar_t *__restrict __s1,
 266                     __const wchar_t *__restrict __s2, size_t __n)
 267      __THROW __attribute_pure__;
 268
 269 /* Copy N wide characters of SRC to DEST.  */
 270 extern wchar_t *wmemcpy (wchar_t *__restrict __s1,
 271                          __const wchar_t *__restrict __s2, size_t __n) __THROW;
 272
 273 /* Copy N wide characters of SRC to DEST, guaranteeing
 274    correct behavior for overlapping strings.  */
 275 extern wchar_t *wmemmove (wchar_t *__s1, __const wchar_t *__s2, size_t __n)
 276      __THROW;
 277
 278 /* Set N wide characters of S to C.  */
 279 extern wchar_t *wmemset (wchar_t *__s, wchar_t __c, size_t __n) __THROW;
 280 __END_NAMESPACE_C99
 281
 282 #ifdef __USE_GNU
 283 /* Copy N wide characters of SRC to DEST and return pointer to following
 284    wide character.  */
 285 extern wchar_t *wmempcpy (wchar_t *__restrict __s1,
 286                           __const wchar_t *__restrict __s2, size_t __n)
 287      __THROW;
 288 #endif
 289
 290
 291 __BEGIN_NAMESPACE_C99
 292 /* Determine whether C constitutes a valid (one-byte) multibyte
 293    character.  */
 294 extern wint_t btowc (int __c) __THROW;
 295
 296 /* Determine whether C corresponds to a member of the extended
 297    character set whose multibyte representation is a single byte.  */
 298 extern int wctob (wint_t __c) __THROW;
 299
 300 /* Determine whether PS points to an object representing the initial
 301    state.  */
 302 extern int mbsinit (__const mbstate_t *__ps) __THROW __attribute_pure__;
 303
 304 /* Write wide character representation of multibyte character pointed
 305    to by S to PWC.  */
 306 extern size_t mbrtowc (wchar_t *__restrict __pwc,
 307                        __const char *__restrict __s, size_t __n,
 308                        mbstate_t *__p) __THROW;
 309
 310 /* Write multibyte representation of wide character WC to S.  */
 311 extern size_t wcrtomb (char *__restrict __s, wchar_t __wc,
 312                        mbstate_t *__restrict __ps) __THROW;
 313
 314 /* Return number of bytes in multibyte character pointed to by S.  */
 315 extern size_t __mbrlen (__const char *__restrict __s, size_t __n,
 316                         mbstate_t *__restrict __ps) __THROW;
 317 extern size_t mbrlen (__const char *__restrict __s, size_t __n,
 318                       mbstate_t *__restrict __ps) __THROW;
 319 __END_NAMESPACE_C99
 320
 321 #ifdef __USE_EXTERN_INLINES
 322 /* Define inline function as optimization.  */
 323
 324 # ifndef __cplusplus
 325 /* We can use the BTOWC and WCTOB optimizations since we know that all
 326    locales must use ASCII encoding for the values in the ASCII range
 327    and because the wchar_t encoding is always ISO 10646.  */
 328 extern wint_t __btowc_alias (int __c) __asm ("btowc");
 329 extern __inline wint_t
 330 __NTH (btowc (int __c))
 331 { return (__builtin_constant_p (__c) && __c >= '\0' && __c <= '\x7f'
 332           ? (wint_t) __c : __btowc_alias (__c)); }
 333
 334 extern int __wctob_alias (wint_t __c) __asm ("wctob");
 335 extern __inline int
 336 __NTH (wctob (wint_t __wc))
 337 { return (__builtin_constant_p (__wc) && __wc >= L'\0' && __wc <= L'\x7f'
 338           ? (int) __wc : __wctob_alias (__wc)); }
 339 # endif
 340
 341 extern __inline size_t
 342 __NTH (mbrlen (__const char *__restrict __s, size_t __n,
 343                mbstate_t *__restrict __ps))
 344 { return (__ps != NULL
 345           ? mbrtowc (NULL, __s, __n, __ps) : __mbrlen (__s, __n, NULL)); }
 346 #endif
 347
 348 __BEGIN_NAMESPACE_C99
 349 /* Write wide character representation of multibyte character string
 350    SRC to DST.  */
 351 extern size_t mbsrtowcs (wchar_t *__restrict __dst,
 352                          __const char **__restrict __src, size_t __len,
 353                          mbstate_t *__restrict __ps) __THROW;
 354
 355 /* Write multibyte character representation of wide character string
 356    SRC to DST.  */
 357 extern size_t wcsrtombs (char *__restrict __dst,
 358                          __const wchar_t **__restrict __src, size_t __len,
 359                          mbstate_t *__restrict __ps) __THROW;
 360 __END_NAMESPACE_C99
 361
 362
 363 #ifdef  __USE_GNU
 364 /* Write wide character representation of at most NMC bytes of the
 365    multibyte character string SRC to DST.  */
 366 extern size_t mbsnrtowcs (wchar_t *__restrict __dst,
 367                           __const char **__restrict __src, size_t __nmc,
 368                           size_t __len, mbstate_t *__restrict __ps) __THROW;
 369
 370 /* Write multibyte character representation of at most NWC characters
 371    from the wide character string SRC to DST.  */
 372 extern size_t wcsnrtombs (char *__restrict __dst,
 373                           __const wchar_t **__restrict __src,
 374                           size_t __nwc, size_t __len,
 375                           mbstate_t *__restrict __ps) __THROW;
 376 #endif  /* use GNU */
 377
 378
 379 /* The following functions are extensions found in X/Open CAE.  */
 380 #ifdef __USE_XOPEN
 381 /* Determine number of column positions required for C.  */
 382 extern int wcwidth (wchar_t __c) __THROW;
 383
 384 /* Determine number of column positions required for first N wide
 385    characters (or fewer if S ends before this) in S.  */
 386 extern int wcswidth (__const wchar_t *__s, size_t __n) __THROW;
 387 #endif  /* Use X/Open.  */
 388
 389
 390 __BEGIN_NAMESPACE_C99
 391 /* Convert initial portion of the wide string NPTR to `double'
 392    representation.  */
 393 extern double wcstod (__const wchar_t *__restrict __nptr,
 394                       wchar_t **__restrict __endptr) __THROW;
 395
 396 #ifdef __USE_ISOC99
 397 /* Likewise for `float' and `long double' sizes of floating-point numbers.  */
 398 extern float wcstof (__const wchar_t *__restrict __nptr,
 399                      wchar_t **__restrict __endptr) __THROW;
 400 extern long double wcstold (__const wchar_t *__restrict __nptr,
 401                             wchar_t **__restrict __endptr) __THROW;
 402 #endif /* C99 */
 403
 404
 405 /* Convert initial portion of wide string NPTR to `long int'
 406    representation.  */
 407 extern long int wcstol (__const wchar_t *__restrict __nptr,
 408                         wchar_t **__restrict __endptr, int __base) __THROW;
 409
 410 /* Convert initial portion of wide string NPTR to `unsigned long int'
 411    representation.  */
 412 extern unsigned long int wcstoul (__const wchar_t *__restrict __nptr,
 413                                   wchar_t **__restrict __endptr, int __base)
 414      __THROW;
 415
 416 #if defined __USE_ISOC99 || (defined __GNUC__ && defined __USE_GNU)
 417 /* Convert initial portion of wide string NPTR to `long int'
 418    representation.  */
 419 __extension__
 420 extern long long int wcstoll (__const wchar_t *__restrict __nptr,
 421                               wchar_t **__restrict __endptr, int __base)
 422      __THROW;
 423
 424 /* Convert initial portion of wide string NPTR to `unsigned long long int'
 425    representation.  */
 426 __extension__
 427 extern unsigned long long int wcstoull (__const wchar_t *__restrict __nptr,
 428                                         wchar_t **__restrict __endptr,
 429                                         int __base) __THROW;
 430 #endif /* ISO C99 or GCC and GNU.  */
 431 __END_NAMESPACE_C99
 432
 433 #if defined __GNUC__ && defined __USE_GNU
 434 /* Convert initial portion of wide string NPTR to `long int'
 435    representation.  */
 436 __extension__
 437 extern long long int wcstoq (__const wchar_t *__restrict __nptr,
 438                              wchar_t **__restrict __endptr, int __base)
 439      __THROW;
 440
 441 /* Convert initial portion of wide string NPTR to `unsigned long long int'
 442    representation.  */
 443 __extension__
 444 extern unsigned long long int wcstouq (__const wchar_t *__restrict __nptr,
 445                                        wchar_t **__restrict __endptr,
 446                                        int __base) __THROW;
 447 #endif /* GCC and use GNU.  */
 448
 449 #ifdef __USE_GNU
 450 /* The concept of one static locale per category is not very well
 451    thought out.  Many applications will need to process its data using
 452    information from several different locales.  Another application is
 453    the implementation of the internationalization handling in the
 454    upcoming ISO C++ standard library.  To support this another set of
 455    the functions using locale data exist which have an additional
 456    argument.
 457
 458    Attention: all these functions are *not* standardized in any form.
 459    This is a proof-of-concept implementation.  */
 460
 461 /* Structure for reentrant locale using functions.  This is an
 462    (almost) opaque type for the user level programs.  */
 463 # include <xlocale.h>
 464
 465 /* Special versions of the functions above which take the locale to
 466    use as an additional parameter.  */
 467 extern long int wcstol_l (__const wchar_t *__restrict __nptr,
 468                           wchar_t **__restrict __endptr, int __base,
 469                           __locale_t __loc) __THROW;
 470
 471 extern unsigned long int wcstoul_l (__const wchar_t *__restrict __nptr,
 472                                     wchar_t **__restrict __endptr,
 473                                     int __base, __locale_t __loc) __THROW;
 474
 475 __extension__
 476 extern long long int wcstoll_l (__const wchar_t *__restrict __nptr,
 477                                 wchar_t **__restrict __endptr,
 478                                 int __base, __locale_t __loc) __THROW;
 479
 480 __extension__
 481 extern unsigned long long int wcstoull_l (__const wchar_t *__restrict __nptr,
 482                                           wchar_t **__restrict __endptr,
 483                                           int __base, __locale_t __loc)
 484      __THROW;
 485
 486 extern double wcstod_l (__const wchar_t *__restrict __nptr,
 487                         wchar_t **__restrict __endptr, __locale_t __loc)
 488      __THROW;
 489
 490 extern float wcstof_l (__const wchar_t *__restrict __nptr,
 491                        wchar_t **__restrict __endptr, __locale_t __loc)
 492      __THROW;
 493
 494 extern long double wcstold_l (__const wchar_t *__restrict __nptr,
 495                               wchar_t **__restrict __endptr,
 496                               __locale_t __loc) __THROW;
 497 #endif /* GNU */
 498
 499
 500 /* The internal entry points for `wcstoX' take an extra flag argument
 501    saying whether or not to parse locale-dependent number grouping.  */
 502 extern double __wcstod_internal (__const wchar_t *__restrict __nptr,
 503                                  wchar_t **__restrict __endptr, int __group)
 504      __THROW;
 505 extern float __wcstof_internal (__const wchar_t *__restrict __nptr,
 506                                 wchar_t **__restrict __endptr, int __group)
 507      __THROW;
 508 extern long double __wcstold_internal (__const wchar_t *__restrict __nptr,
 509                                        wchar_t **__restrict __endptr,
 510                                        int __group) __THROW;
 511
 512 #if !defined __wcstol_internal_defined \
 513     && defined __OPTIMIZE__ && __GNUC__ >= 2
 514 extern long int __wcstol_internal (__const wchar_t *__restrict __nptr,
 515                                    wchar_t **__restrict __endptr,
 516                                    int __base, int __group) __THROW;
 517 # define __wcstol_internal_defined      1
 518 #endif
 519 #if !defined __wcstoul_internal_defined \
 520     && defined __OPTIMIZE__ && __GNUC__ >= 2
 521 extern unsigned long int __wcstoul_internal (__const wchar_t *__restrict __npt,
 522                                              wchar_t **__restrict __endptr,
 523                                              int __base, int __group) __THROW;
 524 # define __wcstoul_internal_defined     1
 525 #endif
 526 #if !defined __wcstoll_internal_defined \
 527     && defined __OPTIMIZE__ && __GNUC__ >= 2
 528 __extension__
 529 extern long long int __wcstoll_internal (__const wchar_t *__restrict __nptr,
 530                                          wchar_t **__restrict __endptr,
 531                                          int __base, int __group) __THROW;
 532 # define __wcstoll_internal_defined     1
 533 #endif
 534 #if !defined __wcstoull_internal_defined \
 535     && defined __OPTIMIZE__ && __GNUC__ >= 2
 536 __extension__
 537 extern unsigned long long int __wcstoull_internal (__const wchar_t *
 538                                                    __restrict __nptr,
 539                                                    wchar_t **
 540                                                    __restrict __endptr,
 541                                                    int __base,
 542                                                    int __group) __THROW;
 543 # define __wcstoull_internal_defined    1
 544 #endif
 545
 546
 547 #if defined __OPTIMIZE__ && __GNUC__ >= 2
 548 /* Define inline functions which call the internal entry points.  */
 549 __BEGIN_NAMESPACE_C99
 550
 551 extern __inline double
 552 __NTH (wcstod (__const wchar_t *__restrict __nptr,
 553                wchar_t **__restrict __endptr))
 554 { return __wcstod_internal (__nptr, __endptr, 0); }
 555 extern __inline long int
 556 __NTH (wcstol (__const wchar_t *__restrict __nptr,
 557                wchar_t **__restrict __endptr, int __base))
 558 { return __wcstol_internal (__nptr, __endptr, __base, 0); }
 559 extern __inline unsigned long int
 560 __NTH (wcstoul (__const wchar_t *__restrict __nptr,
 561                 wchar_t **__restrict __endptr, int __base))
 562 { return __wcstoul_internal (__nptr, __endptr, __base, 0); }
 563 __END_NAMESPACE_C99
 564
 565 # ifdef __USE_GNU
 566 extern __inline float
 567 __NTH (wcstof (__const wchar_t *__restrict __nptr,
 568                wchar_t **__restrict __endptr))
 569 { return __wcstof_internal (__nptr, __endptr, 0); }
 570 #  ifndef __LDBL_COMPAT
 571 extern __inline long double
 572 __NTH (wcstold (__const wchar_t *__restrict __nptr,
 573                 wchar_t **__restrict __endptr))
 574 { return __wcstold_internal (__nptr, __endptr, 0); }
 575 #  endif
 576 __extension__
 577 extern __inline long long int
 578 __NTH (wcstoq (__const wchar_t *__restrict __nptr,
 579                wchar_t **__restrict __endptr, int __base))
 580 { return __wcstoll_internal (__nptr, __endptr, __base, 0); }
 581 __extension__
 582 extern __inline unsigned long long int
 583 __NTH (wcstouq (__const wchar_t *__restrict __nptr,
 584                 wchar_t **__restrict __endptr, int __base))
 585 { return __wcstoull_internal (__nptr, __endptr, __base, 0); }
 586 # endif /* Use GNU.  */
 587 #endif /* Optimizing GCC >=2.  */
 588
 589
 590 #ifdef  __USE_GNU
 591 /* Copy SRC to DEST, returning the address of the terminating L'\0' in
 592    DEST.  */
 593 extern wchar_t *wcpcpy (wchar_t *__dest, __const wchar_t *__src) __THROW;
 594
 595 /* Copy no more than N characters of SRC to DEST, returning the address of
 596    the last character written into DEST.  */
 597 extern wchar_t *wcpncpy (wchar_t *__dest, __const wchar_t *__src, size_t __n)
 598      __THROW;
 599 #endif  /* use GNU */
 600
 601
 602 /* Wide character I/O functions.  */
 603 #if defined __USE_ISOC99 || defined __USE_UNIX98
 604 __BEGIN_NAMESPACE_C99
 605
 606 /* Select orientation for stream.  */
 607 extern int fwide (__FILE *__fp, int __mode) __THROW;
 608
 609
 610 /* Write formatted output to STREAM.
 611
 612    This function is a possible cancellation point and therefore not
 613    marked with __THROW.  */
 614 extern int fwprintf (__FILE *__restrict __stream,
 615                      __const wchar_t *__restrict __format, ...)
 616      /* __attribute__ ((__format__ (__wprintf__, 2, 3))) */;
 617 /* Write formatted output to stdout.
 618
 619    This function is a possible cancellation point and therefore not
 620    marked with __THROW.  */
 621 extern int wprintf (__const wchar_t *__restrict __format, ...)
 622      /* __attribute__ ((__format__ (__wprintf__, 1, 2))) */;
 623 /* Write formatted output of at most N characters to S.  */
 624 extern int swprintf (wchar_t *__restrict __s, size_t __n,
 625                      __const wchar_t *__restrict __format, ...)
 626      __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 4))) */;
 627
 628 /* Write formatted output to S from argument list ARG.
 629
 630    This function is a possible cancellation point and therefore not
 631    marked with __THROW.  */
 632 extern int vfwprintf (__FILE *__restrict __s,
 633                       __const wchar_t *__restrict __format,
 634                       __gnuc_va_list __arg)
 635      /* __attribute__ ((__format__ (__wprintf__, 2, 0))) */;
 636 /* Write formatted output to stdout from argument list ARG.
 637
 638    This function is a possible cancellation point and therefore not
 639    marked with __THROW.  */
 640 extern int vwprintf (__const wchar_t *__restrict __format,
 641                      __gnuc_va_list __arg)
 642      /* __attribute__ ((__format__ (__wprintf__, 1, 0))) */;
 643 /* Write formatted output of at most N character to S from argument
 644    list ARG.  */
 645 extern int vswprintf (wchar_t *__restrict __s, size_t __n,
 646                       __const wchar_t *__restrict __format,
 647                       __gnuc_va_list __arg)
 648      __THROW /* __attribute__ ((__format__ (__wprintf__, 3, 0))) */;
 649
 650
 651 /* Read formatted input from STREAM.
 652
 653    This function is a possible cancellation point and therefore not
 654    marked with __THROW.  */
 655 extern int fwscanf (__FILE *__restrict __stream,
 656                     __const wchar_t *__restrict __format, ...)
 657      /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 658 /* Read formatted input from stdin.
 659
 660    This function is a possible cancellation point and therefore not
 661    marked with __THROW.  */
 662 extern int wscanf (__const wchar_t *__restrict __format, ...)
 663      /* __attribute__ ((__format__ (__wscanf__, 1, 2))) */;
 664 /* Read formatted input from S.  */
 665 extern int swscanf (__const wchar_t *__restrict __s,
 666                     __const wchar_t *__restrict __format, ...)
 667      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 3))) */;
 668
 669 __END_NAMESPACE_C99
 670 #endif /* Use ISO C99 and Unix98. */
 671
 672 #ifdef __USE_ISOC99
 673 __BEGIN_NAMESPACE_C99
 674
 675 /* Read formatted input from S into argument list ARG.
 676
 677    This function is a possible cancellation point and therefore not
 678    marked with __THROW.  */
 679 extern int vfwscanf (__FILE *__restrict __s,
 680                      __const wchar_t *__restrict __format,
 681                      __gnuc_va_list __arg)
 682      /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
 683 /* Read formatted input from stdin into argument list ARG.
 684
 685    This function is a possible cancellation point and therefore not
 686    marked with __THROW.  */
 687 extern int vwscanf (__const wchar_t *__restrict __format,
 688                     __gnuc_va_list __arg)
 689      /* __attribute__ ((__format__ (__wscanf__, 1, 0))) */;
 690 /* Read formatted input from S into argument list ARG.  */
 691 extern int vswscanf (__const wchar_t *__restrict __s,
 692                      __const wchar_t *__restrict __format,
 693                      __gnuc_va_list __arg)
 694      __THROW /* __attribute__ ((__format__ (__wscanf__, 2, 0))) */;
 695
 696 __END_NAMESPACE_C99
 697 #endif /* Use ISO C99. */
 698
 699
 700 __BEGIN_NAMESPACE_C99
 701 /* Read a character from STREAM.
 702
 703    These functions are possible cancellation points and therefore not
 704    marked with __THROW.  */
 705 extern wint_t fgetwc (__FILE *__stream);
 706 extern wint_t getwc (__FILE *__stream);
 707
 708 /* Read a character from stdin.
 709
 710    This function is a possible cancellation point and therefore not
 711    marked with __THROW.  */
 712 extern wint_t getwchar (void);
 713
 714
 715 /* Write a character to STREAM.
 716
 717    These functions are possible cancellation points and therefore not
 718    marked with __THROW.  */
 719 extern wint_t fputwc (wchar_t __wc, __FILE *__stream);
 720 extern wint_t putwc (wchar_t __wc, __FILE *__stream);
 721
 722 /* Write a character to stdout.
 723
 724    This function is a possible cancellation points and therefore not
 725    marked with __THROW.  */
 726 extern wint_t putwchar (wchar_t __wc);
 727
 728
 729 /* Get a newline-terminated wide character string of finite length
 730    from STREAM.
 731
 732    This function is a possible cancellation points and therefore not
 733    marked with __THROW.  */
 734 extern wchar_t *fgetws (wchar_t *__restrict __ws, int __n,
 735                         __FILE *__restrict __stream);
 736
 737 /* Write a string to STREAM.
 738
 739    This function is a possible cancellation points and therefore not
 740    marked with __THROW.  */
 741 extern int fputws (__const wchar_t *__restrict __ws,
 742                    __FILE *__restrict __stream);
 743
 744
 745 /* Push a character back onto the input buffer of STREAM.
 746
 747    This function is a possible cancellation points and therefore not
 748    marked with __THROW.  */
 749 extern wint_t ungetwc (wint_t __wc, __FILE *__stream);
 750 __END_NAMESPACE_C99
 751
 752
 753 #ifdef __USE_GNU
 754 /* These are defined to be equivalent to the `char' functions defined
 755    in POSIX.1:1996.
 756
 757    These functions are not part of POSIX and therefore no official
 758    cancellation point.  But due to similarity with an POSIX interface
 759    or due to the implementation they are cancellation points and
 760    therefore not marked with __THROW.  */
 761 extern wint_t getwc_unlocked (__FILE *__stream);
 762 extern wint_t getwchar_unlocked (void);
 763
 764 /* This is the wide character version of a GNU extension.
 765
 766    This function is not part of POSIX and therefore no official
 767    cancellation point.  But due to similarity with an POSIX interface
 768    or due to the implementation it is a cancellation point and
 769    therefore not marked with __THROW.  */
 770 extern wint_t fgetwc_unlocked (__FILE *__stream);
 771
 772 /* Faster version when locking is not necessary.
 773
 774    This function is not part of POSIX and therefore no official
 775    cancellation point.  But due to similarity with an POSIX interface
 776    or due to the implementation it is a cancellation point and
 777    therefore not marked with __THROW.  */
 778 extern wint_t fputwc_unlocked (wchar_t __wc, __FILE *__stream);
 779
 780 /* These are defined to be equivalent to the `char' functions defined
 781    in POSIX.1:1996.
 782
 783    These functions are not part of POSIX and therefore no official
 784    cancellation point.  But due to similarity with an POSIX interface
 785    or due to the implementation they are cancellation points and
 786    therefore not marked with __THROW.  */
 787 extern wint_t putwc_unlocked (wchar_t __wc, __FILE *__stream);
 788 extern wint_t putwchar_unlocked (wchar_t __wc);
 789
 790
 791 /* This function does the same as `fgetws' but does not lock the stream.
 792
 793    This function is not part of POSIX and therefore no official
 794    cancellation point.  But due to similarity with an POSIX interface
 795    or due to the implementation it is a cancellation point and
 796    therefore not marked with __THROW.  */
 797 extern wchar_t *fgetws_unlocked (wchar_t *__restrict __ws, int __n,
 798                                  __FILE *__restrict __stream);
 799
 800 /* This function does the same as `fputws' but does not lock the stream.
 801
 802    This function is not part of POSIX and therefore no official
 803    cancellation point.  But due to similarity with an POSIX interface
 804    or due to the implementation it is a cancellation point and
 805    therefore not marked with __THROW.  */
 806 extern int fputws_unlocked (__const wchar_t *__restrict __ws,
 807                             __FILE *__restrict __stream);
 808 #endif
 809
 810
 811 __BEGIN_NAMESPACE_C99
 812 /* Format TP into S according to FORMAT.
 813    Write no more than MAXSIZE wide characters and return the number
 814    of wide characters written, or 0 if it would exceed MAXSIZE.  */
 815 extern size_t wcsftime (wchar_t *__restrict __s, size_t __maxsize,
 816                         __const wchar_t *__restrict __format,
 817                         __const struct tm *__restrict __tp) __THROW;
 818 __END_NAMESPACE_C99
 819
 820 # ifdef __USE_GNU
 821 # include <xlocale.h>
 822
 823 /* Similar to `wcsftime' but takes the information from
 824    the provided locale and not the global locale.  */
 825 extern size_t wcsftime_l (wchar_t *__restrict __s, size_t __maxsize,
 826                           __const wchar_t *__restrict __format,
 827                           __const struct tm *__restrict __tp,
 828                           __locale_t __loc) __THROW;
 829 # endif
 830
 831 /* The X/Open standard demands that most of the functions defined in
 832    the <wctype.h> header must also appear here.  This is probably
 833    because some X/Open members wrote their implementation before the
 834    ISO C standard was published and introduced the better solution.
 835    We have to provide these definitions for compliance reasons but we
 836    do this nonsense only if really necessary.  */
 837 #if defined __USE_UNIX98 && !defined __USE_GNU
 838 # define __need_iswxxx
 839 # include <wctype.h>
 840 #endif
 841
 842 /* Define some macros helping to catch buffer overflows.  */
 843 #if __USE_FORTIFY_LEVEL > 0 && !defined __cplusplus
 844 # include <bits/wchar2.h>
 845 #endif
 846
 847 #ifdef __LDBL_COMPAT
 848 # include <bits/wchar-ldbl.h>
 849 #endif
 850
 851 __END_DECLS
 852
 853 #endif  /* _WCHAR_H defined */
 854
 855 #endif /* wchar.h  */